From Magnetic Sensors Corporation
Industry continues to reap the benefits of
solid state magnetic field sensing. Every day new
applications are found for solid state magnetic field
sensors due to their small size, low power. And
relatively low cost. The new frontier for these solid
state sensors is very low magnetic fields; the kinds
encountered when looking for geophysical anomalies,
either natural or man-made, various physiological
functions, metal defects, magnetic ink and minute
magnetic particles associated with immunoassay. In
the past, equipment to perform many of these
functions has required a substantial amount of power
and has been quite large. In addition, because of their
size, the equipment has become costly. Leveraging
on substantial government efforts, GMR technology is
being applied to these applications today and the
newer GMR technologies such as Spin Dependent
Tunneling (SDT) will make even more of these
applications possible. As with all of solid state
technology, many of the now difficult measurements
will become more commonplace and provide the
ingredients for more precise measurement, diagnosis,
and control. Several applications will be presented on
the use of individual sensors and arrays being used to
address some of these new areas.
Products & Services
Hall Effect Proximity Sensors
Hall effect proximity sensors are used to detect the proximity, presence or absence of a magnetic object using a critical distance.
Proximity sensors, all types is a general search form for all proximity sensors and presence detection product areas.
Magnetic Proximity Sensors
Magnetic proximity sensors include devices that work on inductive, variable reluctance, magneto resistive or Hall effect principles. Proximity sensors detect the presence or absence of an object using a critical distance.
Topics of Interest
Over the years, many users have abandoned the use of reed switches due to their failure rate and have utilized mechanical or inductive sensors to detect pneumatic cylinder position. AMR and GMR...
Spintronic solid-state sensors have been used in industrial applications. New developments may make them useful for medical devices, too. Quantum mechanics states that electrons have two stable...
The resistance of a ferromagnetic metal changes when one applies a magnetic field. This change is related to the dependence of the resistance on the angle between the...
Magnetic sensors detect moving ferrous metal. The simplest magnetic sensor consists of a wire coiled around a permanent magnet. A ferrous object approaching the sensor changes magnetic flux through...
Characteristic M = M(H) for a superparamagnetic material. The advantages of using magnetic beads as labels in bioassays have been well established. Magnetic beads are not affected by reagent chemistry...